To bring you up to date, there are 3 flight schools at Grand Central Airport, namely Superior Air, FTS and Lanseria Flight School. The latter was despatched from the actual Lanseria when it went seriously schedule airlines.
Today 27th March the temperature was 23.8°C and at a field elevation of 5327 feet the Density Altitude was 7201 feet.
A C172 has been beating the circuit all day and into the night.
There is a large selection of aircraft, C172, C182, PA28 and even a Twin Comanche.
For short stay pilots you will probably just have to write Air Law, for longer stays it becomes more onerous.
All the above schools can be contacted on the Web.
For those who don't know Grand Central Airport is midway between Johannesburg and Pretoria and very accessible from the main highways.
I'm here for a couple more days then back to Subang, Malaysia.